A new investigation into rust on the Moon implicates Earth as the culprit. Oxygen leaking out of Earth is likely responsible for the transformation of iron to hematite (Fe 2 O 3) at the lunar poles.

Like pipes, statues and nails, the moon can rust. Such rusting has occurred despite a seeming lack of necessary components — but all signs of blame point to the Earth. A new study posits that the ...

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